51,060 research outputs found
Stellar model fits and inversions
The recent asteroseismic data from the CoRoT and Kepler missions have
provided an entirely new basis for investigating stellar properties. This has
led to a rapid development in techniques for analysing such data, although it
is probably fair to say that we are still far from having the tools required
for the full use of the potential of the observations. Here I provide a brief
overview of some of the issues related to the interpretation of asteroseismic
data.Comment: Proc. ESF Conference : "The Modern Era of Helio- and
Asteroseismology", Obergurgl, 20 - 25 May, 2012. To appear in Astron. Nach.
Guest editor: Markus Rot
Open issues in stellar modelling
An important goal of helio- and asteroseismology is to improve the modelling
of stellar evolution. Here I provide a brief discussion of some of the
uncertain issues in stellar modelling, of possible relevance to asteroseismic
inferences.Comment: Proc. HELAS Workshop on `New insights into the Sun', eds M. S. Cunha
and M. J. Thompson (invited talk
The Sun as a fundamental calibrator of stellar evolution
The Sun is unique amongst stars in having a precisely determined age which
does not depend on the modelling of stellar evolution. Furthermore, other
global properties of the Sun are known to much higher accuracy than for any
other star. Also, helioseismology has provided detailed determination of the
solar internal structure and rotation. As a result, the Sun plays a central
role in the development and test of stellar modelling. Here I discuss solar
modelling and its application to tests of asteroseismic techniques for stellar
age determination.Comment: To appear in Proc. IAU Symposium 258, The Ages of Stars, eds E. E.
Mamajek, D. R. Soderblom & R. F. G. Wyse, IAU and Cambridge University Pres
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